Hmm... the article didn't post a link to the study.. so its difficult to tell..
But of cause Correlation is not Causality...
And I suspect, that someone has added that headline, and thats got picked up by people who get attracted by the Link to Phones. Only 18 of the 150 had their device privileges revoked.
Perhaps the most telling line in the story is
"More than half — 55 percent — of the Utah suicides from 2011-2015 had experienced a recent crisis, most of which were family or dating relationships, the report found."